John William Waterhouse (1849-1917) var en engelsk maler kendt for sine romantiske og detaljerede billeder af mytologiske figurer, kvinder fra legender som Ophelia og Lady of Shalott samt hans præraffaelitiske stil.
The Ball (1902) is an oil painting by the English Pre-Raphaelite painter John William Waterhouse. Also known as 'The Crystal Ball'. A previous owner painted over the skull in this painting. The painting has now been restored to its original state.